Answer: 
Step-by-step explanation:
Given:

To make
the subject of the formula means that we want to make
to stand alone , the first thing to do is to multiply through by 1/4a , that is

take the square of both sides:

Answer:
7*7n=49n
-6V
-9*6n= -54n
-5k*-9=45k
-8*3b= -24b
double negative 6x answer 6x
-10*2a= -20a
-4*7p= -28p
Step-by-step explanation:
Answer:
90 diagonais.
Step-by-step explanation:

Y=10
x+3=y
x=7
I think this is the answer
hope it helps!